Impact ejector pump



July 26, 1932.

c. J. WOLFF ET AL IMPACT EJECTOR PUMP Filed Dec. 4, 19:51

2 Sheets-Sheet l c. J. woLFF ET AL IMPACT EJECTOR PUMP July 26, 1932Filed Dec. 4. 1931 '2 Sheets-Sheet 2 gwoentws C; r]. Wolff W: W. Coach,

, 1y to a novel tages.

as the description proceeds,

Patented July. 26, 19 32 UNITED srATEs-"PATE Nr OFFICE cfiannns .1.wonrr AND WILLIAM w. coucn, or sen An'romo, TEXAS IMPACT nanc'ron rum? iApplication nice December 4, I931. Serial n. 579,073.

This invention relates to improvements in impact e ector pumps, and moreparticularpump of this type tobe employed in the pumping of oil -Wellsor the like.

3 Heretofore it has been proposed to arrange in the tubing string of awell, nozzles and Venturi tubes through which a pressure fluid is forcedfrom the exterior ofthe tubing to drive the pumped fluid up the tubing.Such apparatus has required weakening of the tubing string andenlargement of the tubing where the nozzles and Venturi tubes arelocated. It is the primary object of the resent invention to eliminatesuch disad an In aecordance with our invention, the nozzle and Venturitube are arranged within an. ordinary tubing coupling section, and theseelements are firmlysecured within such sec- .tion by threaded memberswhich engage the conventional threads of the coupling section. A

Another object of the invention is to provide a deep well liquid pump in,which the pumped liquid is employed as the pressure fiui so that itisu-nnecess'ary to make any separation at the top of the well betweenthe With th e foregoing objects outlined and with other objects in viewwhich will appear the invention; consists in the novel featureshereinafter described in detail; illustrated in the ac compa nyingdrawings; and more particularly pointed out in the appended claims.

In the drawings,

Figi-l is a vertical sectional view partly in elevation andpartly brokenaway, of a pump in accordance withour invention, the pump being shownin-the well, and the left hand portion of the figure showing the up: I

per-portion of the well and Pu p, n; the right hand portion showing thelower parts of the same. I v Fig. 2 is an enlarged vertical sectionalview partly in elevation of a detailf K Fig. 3;is a horizontal sectionalView on the line of Fig. 2.

annular passageway 14 between the collars 20 and 21. It will "on the n 1which screws ensembles 24 and 25 Fig. 4 is a horizontal sectional detailon the line 4-4 of Fig. 2.

Fig. 5 is a horizontal sectional view of a motion 11 of the tubing. Thissection and the strainer are connected bya packer 12 which, when thesection ll is resting ona shoulder 13 .of the strainer, acts to expandinto contact with the casing so as to seal'the tubing and easing, fromthe oil sand. p

In accordance with our invention, an ordinary tubing coupling section 15of uniform external diameter from en to end, has the threads atitsilowerend screwed on to the tubing section 11 as shown at 16; and re.- movablvarranged in such coupling section area Venturi tube 1,7,a nozzle element18, a valve member 19, and a pair of threaded be noted that the valvemember rests on the threaded collar 21, and that the'latter engages theconventional threads of the coupling section. Furthermore, thenozzle'member 'rests on the valve member, and the Venturi tube rests zlemember and issecurely locked in position by into the upper threads oithecoupling section, The nozzle proper 22 of this pumping ensembleterminates in close proximity to tube,

As many of these ensembles as are necessary for a particular well may beinterposed inthe tubing string at proper elevations, but if desired, thevalve member 19 may be employed in the lowermost section only. As

shown in Fig. 1, a plurality of the pumping I g are interposed in thetubmg string, and each of these may be constructed as shown. in Figs. 2to a inclusive.

tublng, is arranged at its lower end, and is.

thethroat 23 of the Venturi view of a the upper threaded collar 20 and28, the latter engaging the external threads of a tubing section 29, andthe former engaging the lower threads of a tubing section 30. Within thecoupling section, We removably arrange a Venturi tube 31 and a nozzlemember 32, andwe anchor these ele ments in position by the use ofthreaded collars 33 and 34 which screw respectively into the threadedends 27 and 28 of the coupling section.

In order that the coupling section may not be weakenedto any materialextent, We provide the same with a single inlet hole 35 only; and thenozzle member includes a ring 36 having a passageway 37 communicatingwith this hole. The passageway elbow 38, and between this elbow and thering there is a single substantially C-shaped passageway 39 to permitthe well fluid to flow upthe tubing. In each instance, the elbowterminates in internal threads 40 to receive the external threads of thenozzle proper 41,

and the latter is provided with a Vlanturishaped bore 42 through whichthe pressure flulijd travels into the throat 43 of the Venturi tu e. e ga Each of the threaded collars is preferably provided with spannerwrenchholes 44 to facilitate removal of the elements within the I couplingsection.

' -In practice, pumping ensembles of the typesdescribed may be sold tothe owner of the well and he can insertthe same at any dc? sired pointin the tubing string in substitution for some of the ordinary couplingsections, and this may be done without increas ing the-diameter of thetubing or materially weakening the latter. I

As a further feature of our invention, we arrange at the top of the wella pump 45 which acts to draw liquid from a reservoir 46 and to force thesame into the annular space 14, from which it travels through the nozzlemembers into the tubing string. This pressure medium and the liquidpumped from the well are returned by a pipe 47 to the reservoir or tank46. Obviously, as we use the pumped liquid as the pressure medium, it isunnecessary to make anyseparation of the same in the reservoir '46. I

In actual practice, the Venturi tubesand nozzles will be increased indiameter from bottom to topof the tubing string to take care fluid thatenters the nozof the extra pump zles, in addition to the well fluids,without retarding or choking the flow. I

As best shown in Fig. 5, we have arranged t'wo guide spurs 50 on thelowermost nozzle 18 to guide the ball 51 up beneath the elbow 52 and tokeep it out of the crescent shaped port 53so that when it is in raisedposition,

it will not obstruct the flow of the liquid through said' port. Thesjespurs may annular space extends throughv an screwed into a. lug cast onthe bottomof the elbow, as shown. I

In operation, the pump 45 will vforce oil or the like from thereservoirv 46 down the 14, and it will enter the nozzle elements and bedischarged into the throats of the Venturi tubes where it will impactagainst the liquid enteringthe tubing through the strainer 9 and willact to drive the well liquid up the tubing and through the pipe 47 intothe reservoir 46. Obviously, some of the pumped liquid returned to thewell and the nozzle by means of the pump'45, and the upper ones of thepumping ensembles 24 and 25, will act to boost the liquid which has beenforced upwardly by the lower the details disclosed, Without departingfrom the spirit of the invention, as expressed n the claims.

What we claim and desire to secure by Letters Patent is: 1

1. A well pumping apparatus including a tubing string, a couplingsection forming part of said string and of substantially the samediameter as the latter, a Venturi tube arranged in said section, anozzle member arranged in the section and having an upwardly directednozzle terminating near the throat of the Venturi tube, a port in saidsection for admitting a"; pressure fluid into the nozzle member, andsecuring elements for the Venturi tube and nozzle member arranged aboveand below the latter and anchored to said section. V

2. A well pumping apparatus including a tubing string, a couplingsection forming part of said string and of substantially the samediameteras the latter, a Venturi tube arranged in said section, anozzlemember arranged in the section and having an upsection for admitting apressure fluid into the nozzle member, and securing-elements for theVenturi tube and nozzle niember arranged above and below the latterandanchored to said section, one end portion of the section being threadedandone of the securing elements having threads engaging the threads ofthe section.

3. A well pumping apparatus including a tubing string, a couplingsection forming part of said string-and of substantially the samediameter as the latter, aVenturi tube arranged in said section, a nozzlemember arranged in the section and having an upwardly directed nozzleterminating near the throat of the Venturi tube, a port in said sectionfor admitting a pressure fluid into the nozzle member, and securingelements for ICC the Venturi tube and nozzle member arranged above andbelow the latter and anchored to said section, the end portions of thetubing section being provided with in ternal threads, and the securingelements comprising threaded collars engaging the threads of the tubingsection.

4. A well pumping apparatus including a tubing string, a couplingsection forming part of said string and of substantially the samediameter as the latter, a Venturi tube arranged in said section, anozzle member arranged in the section and having an upwardly directednozzle terminating near the throat of the Venturi tube, a port in saidsection for admitting a pressure'fluid into the nozzle member, securingelements-for the Venturi tube and nozzle member arranged above and belowthe latter and anchored to said section, the nozzle member comprising aring engaging the inner surface of the section at the elevation wherethe port is located, an elbow united with the ring and having apassageway therethrough, and a substantially C-shaped passagewaypositioned between the elbow and the ring.

5. A well pumping apparatus including a tubing string, a couplingsection forming part of said string and of substantially the samediameter as the latter, a Venturi tube arranged in said section, anozzle member arranged in the section and having an upwardly directednozzle terminating near the throat of the Venturi'tube, a port in saidsection for admitting a pressure fluid into the nozzle member, andsecuring elements for the Venturi tube and nozzle member arranged aboveand below the latter and-anchored to said section, said section being ofuniform diameter throughout its length;

6. A well pumping apparatus including a tubing string, a couplingsection forming part of said stringand of substantially the samediameter as the latter, a Venturi tube arranged in said section, anozzle member arranged in the section and having an upwardly directednozzle terminating near the throat of the Venturi tube, aport in saidsection for admitting a pressure fluid into the nozzle member, securingelements for the Venturi tube and nozzle member arranged above and belowthe latter and anchored to said section, and a valvemember' positionedin the section below the nozzle member.

7. A well pumping apparatus including a tubing string, a couplingsection forming part of said string and of substantially the samediameter as the latter, a Venturi tube arranged in said section, anozzle member arranged in the section and having an upwardly directednozzle terminating near the throat of the Venturi tube, a port in saidsection for admitting a pressure fluid into the nozzlemember, andsecuring elements for the Venturi tube and nozzle member arranged aboveand below the latter and anchored to said section, saidVenturi tube andnozzle member being removable from the coupling section through eitherend of the same.

'8. A well pumping apparatus including a tubing string, a couplingsection forming part of said string and of substantially the samediameter as the latter, a Venturi tube arranged in said section, anozzle member arranged in the section and having an u wardly directednozzle terminatingnear t e throat of the Venturi tube, a port in-saidsection for admitting a pressure fluid into the nozzle member, securingelements for the Venturi tube and nozzle member arranged above and belowthe latter and anchored to said section, and a valve member positionedin the section below the nozzle member, said Venturi tube, nozzle memberand valve member being removable from the coupling section througheither end of the same.

9. A well pumping apparatus including a tubing string, a series ofVenturi tubes arranged in the tubing string between the top and bottomof the latter, the bores of the Venturi tubes increasing in diameterfrom the bottom toward the top of the tubing string, a nozzle associatedwlth each Venturi tube and having an upper end terminating near thethroat of the Venturi tube, the bores of the nozzles increasing indiameter from the lowermost nozzle to the uppermost nozzle, ports in thetubing string for admitting a. pressure fluid into said nozzles, andmeans for furnishing a pressure fluid to said ports.

10. A well pumping apparatus including a tubing string, a Venturi tubearranged in the string, a nozzle member arranged in the string andcomprising a collar and an elbow shaped nozzle, the nozzle having anupwardly directed outlet terminating near the throat of the Venturitube, a portin the collar for admittin a pressure fluid into thepassageway of t e nozzle, said nozzle member having a substantiallyC-shaped passageway be tween the nozzle and collar, a valve seatarranged in the tubing string below the nozzle member, a ball valvecooperating therewith, and guiding means within the string for causingthe ball in rising to occupy a position beneath the nozzle to preventthe ball from obstructing said substantially C-shaped ort. P Intestimony whereof, we heretoaflix our signatures.

CHARLES J. WOLFF. WILLIAM W. COUCH.

